push
pop
unshift
shift
----数组
new formData ()
https://developer.mozilla.org/zh-CN/docs/Web/API/FormData/entries
https://blog.csdn.net/wangjun5159/article/details/47781443
posted on 2018-12-01 11:00 runoob! 阅读(147) 评论(0) 收藏 举报